Diferenzas entre revisións de «Isidis Planitia»

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'''Isidis Planitia''' é unha gran planicie orixinada a través dun impacto dun meteorito preto do ecuador marciano, encaixada entre [[Utopia Planitia]] que queda ó norte de Isidis ó seu oeste esta [[Terra Sabaea]], ó sur [[Terra Tyrrhena]] e cara o leste de Isisdis atopase [[Terra Cimmeria]], todas elas ''Terras Altas'' excepto Utopia; as súas coordenadas centrais son 13,94° N 88,38° E<ref name="nomenclatura Isidis"/>. É a segunda cunca de impacto máis grande do planeta, por detrás de [[Hellas Planitia|Hellas]] e por diante de [[Argyre Planitia|Argyre]] (que ten un diámetro medio duns 900 kms<ref name="nomenclatura Argyre">{{cita web | url= http://planetarynames.wr.usgs.gov/Feature/371 | título= Planetary Names: Planitia, planitiae: Argyre Planitia on Mars | dataacceso=04-04-2012}}</ref>). DueDebido toó dust coveragepo, itvese typicallybrillante appearsa brighttravés indos telescopic viewstelescopios, ande wasna mappedera anterior as asondas classicalespaciais, [[albedofoi feature]],clasificada Isidiscoma Regio,un visibleaccidente byxeolóxico telescopede inalbedo thee pre-spacecraftchamada eraIsidis Regio.
 
Tiñase previsto que a [[Beagle 2]] aterrase na parte occidental de Isidis en decembro do ano 2003, pero perdeuse o contacto coa sonda. Xusto á oeste de Isidis está [[Syrtis Major Planum]] (dentro de Terra Sabaea), un volcán de escudo cun relevo extremadamente baixo, ademais de ser unha área cun albedo moi escuro, este volcán formouse con posterioridade ó nacemento da planitia.<ref name="Hiesinger2004">{{cita publicación periódica | autor = Hiesinger, H.; Head ([http://www.planetary.brown.edu/html_pages/headpubs.htm publications]), J. W.; | título = The Syrtis Major volcanic province, Mars: Synthesis from Mars Global Surveyor data
The [[Beagle 2]] lander was about to land in the eastern part of Isidis Planitia in December [[2003]] when contact with the craft was lost. Just to the west of Isidis is [[Syrtis Major Planum]], a low-relief [[shield volcano]] that is also a prominent dark albedo feature of Mars, which formed after the basin.<ref name="Hiesinger2004">{{Citation
| journalrevista = Journal of Geophysical Research
| last = Hiesinger
| first = H.
| author-link =
| last2 = Head ([http://www.planetary.brown.edu/html_pages/headpubs.htm publications])
| first2 = J. W.
| author2-link =
| title = The Syrtis Major volcanic province, Mars: Synthesis from Mars Global Surveyor data
| journal = Journal of Geophysical Research
| volume = 109
| issuenúmero = E1
| data = 08-01-2004 | url = http://www.planetary.brown.edu/pdfs/2763.pdf
| date = 2004-01-08
| url = http://www.planetary.brown.edu/pdfs/2763.pdf
| doi = 10.1029/2003JE002143
| id = E01004
| pagespáxinas = E01004 | bibcode=2004JGRE..10901004H}}</ref>
| bibcode=2004JGRE..10901004H}}</ref>
 
Around the Isidis basin [[magnesium carbonate]] was found by [[MRO]]. This mineral indicates that water was present and that it was not acid. Life may have formed in this area.<ref>Murchie, S. et al. 2009. A synthesis of Martian aqueous mineralogy after 1 Mars year of observations from the Mars Reconnaissance Orbiter. Journal of Geophysical Research: 114.</ref>
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